Talking-machine.



R; L. GIBSON.

'TALKING MACHINE.

APPLICATION FILED MAY 2,1905

Patented May 10,

( uumlroz v Q rVIL ment in Talking-Machines, of which the folwhichROBERT L. GIBSON, 0F PHILADELPHIA, PENNSYLVANIA,

ASSIGNDR TO VICTOR- TALKING-MACHINE.

Specification of Letters Patent.

Application filed May 2, 1965.

L mi recanted May Serial No. 258.442.

To all whom it may concern:

Be it known that I, ROBERT L. GIBSON, of the city and county ofPhiladelphia, State of Pennsylvania. have invented an improvelowing is aspecification.

My invention has reference to talking machines and consists of certainimprovements which are fully set forth in the following specificationand shown in the ac-- compauying drawing which forms part thereof.

The object of my invention is to provide a coi'isliruction of universalarm tor the sound ho): which shall einhody Simplicity and capacity for,movement with the last possible resistance.

' In carrying out my inventioi'i I provide a bracket having a tubularneck adapted to Support the horn, and combine therewith a tubular ari'ncarrying the sound box at its free end and ha ring the other endjournaled in the neck of the bracket through the medium of antifrictionbails said halls fitting into a. groove semicircular in cross eectionformed in the neck of the h acket and supporting a flange secured to thepivoted end of the tubular arm whereby the arm is centralized andsupported by the halls.

My invention also con'iprehends details of construction which, together'ith the tea tures above specified will be better understood byreference to the drawings, in

Figure 1 is a side eievation of a graine- PilOIlQ-Ol talking machineembodying my invention; Jig. 2 is a sectional elevation on line 2--2 of:Fig. 3 showing the manner of supporting the tubular arm which carrieavthe sound box; and Pig. 3 is a similar view on line 3--3 of Fig. 2. l

A is the motor be); or case which rotates the table or support Bcarrying the record disk.

C is a bracket. or arm secured to the side if the box 01 case A andterminating in a tubuiar end C, the aperture havinga Verticai axis.

The horn is supported by the bracket and is sleeved into the tubularpart so as to be adjustable thereon and permit. the horn to he turned inany direction-in which the. sound waves are to he propagated.

H is a tubular arm carrying at. its tree end the sound box I and havingits other end terminating in vertical tubular portion h adjustahlyconnecting with the tubular portion C oi the bracket: whereb said armmay swing thereon as a center. More Specifieally'this coimectionconsists oi the tubular part i" into which is screwed or otherwisesecured a bushing E having a flange c the diameter of which is less thanthe internal diameter of the tubular end C of the hraclaet (I. Theinterior of the end C is provided with a groove 1: near its lower partwhich forms a trachway; and said groove is made preferably semicircularin cross section to receive a series of ai'iti-lrictimi halls L and inwhich said halls are free to travel, they being held therein h thetubular bushing id haring its flange 0 resting upon the halls. inthia'inanner the vertical tuhular part i oi the tuhular arm ii is freeto rotate about a Vertical axis with the least possible frictionalresistance.

To prevent any rattling or griiuling loctween the parts (1" and F, ipreter to place between them an annular washer t of insulating ornon-metallic (:ouipoaition. 'lhia *aaher should not. he suihcientlythick to produce any binding 1 undue friction.

The parts F and U of the tubular arm are jointed on a trzuissverae axis.To secure this structure, i provide the part F with downwardtv extendingaide 211111;; F which have pivot screwa upon which the elbow part; H ofthe arm ii. rotates. This part ii" is preferably made with a taper, bing larger adjacent to the pivots f and also turned upward in an elbowii. The juncture of this elbow and part. F is made in a cylindricalplane whose axis is the pivots f. This junction of the two part5 ii andi is indicated at J and is preferably 'fOI'Il'ltKl with a. very slightclearance. ;-;o as not to create any friction hetwcen the said. parts iiand l,h11tuot enough olclearance to perulit. air waves to eacape, and inthat Wu re duce the ellectiveness oi the artimilatimz.

To enable .the free end of the arm H to he turned up and held out oi the';1}* of the record tahlet when replacing it. with a new one, ,i providea s riu catch K on the part I? which engages :1 lug is on the elbow H ofthe tuhular arm iii.

free end of the arm in an elevated position together with the sound hon.When the arm lowered into sound producing posi.- tion with the stylus ofthe soundhox resting This supports the terial friction.

upon the record tablet, the lug 7c of the arm is above and clear of thespring catch K as shown and consequentlyv there is no interference withthe free movement of the arm both vertically and laterally at its freeend. The weight of the part II of the arm pulls down upon the pivots fduring sound reproduction and consequently the support of the part Fupon the balls is uniform and evenly distributed, so that there is noma- This freedom of lateral movement enables the stylus to follow thegrooves of the record tablet without material resistance therebyenabling a more sensitive response by the sound box to the variations ofthe record grooves upon the stylus.

While I prefer the construction shown, I do not confine myself to thedetails as these may be modified in various ways without departing fromthe spirit of my invention.-

Having now described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. In a talking machine the combination of the bracket having a tubularend having a trackway for antifriction balls, a tubular arm carrying atone end a sound box, a flanged bushing secured to the other end of thetubular arm and having an external diameter smaller than the internaldiameter of the tubular end of the bracket, antifriction balls arrangedbetween the trackway and the flange of the bushing for supporting thepivoted end of the tubular arm, and a horn supported upon the tubularend of the bracket independent of the bushing and pivoted arm.

2. In a talking machine the combination of the bracket having a tubularend having a trackway for antifriction balls, a tubular arm carrying atone end a sound box, a

flanged bushing secured to the other end of the tubular arm and havingan external diaineter smaller than the internal diameter of the tubularend of the bracket, antifriction balls arranged between the trael'rwayand flange of the bushing for supporting the pivoted end of the tubulararm, a nonmetallie washer surrounding the bushing and interposed betweenthe upper end of the tubular arm and bottom of the tubular end of thebracket, and a horn supported upon the tubular end of the bracketindependent of the bushing and pivoted arm.

3. In a talking machine the combination of the bracket having a tubularend having a trackway for antifriction balls, a tubular arm consistingof a vertical pivoted part and a horizontal tubular part carrying at oneend a sound box and having its other end pivoted to the vertical pivotedpart so as to swing vertically about. a transverse axis, a flangedbushing secured to the vertical tubular part of the arm and having anexternal diameter smaller than the internal diameter of the tubular endof the bracket, antifriction balls arranged between the trackway andflange of the bushing for supporting the pivoted end of the tubular arm,and a horn supported upon the tubular end of the bracket independent ofthe bushing and pivoted arm.

4. In a talking machine the combination of the bracket having a tubular.end having porting the pivot/ed end of the tubular arm,

a spring catch to hold the horizontal tubular part of the arm in anelevated posi tion upon the vertical tubular part, and a horn supportedupon the tubular end of the bracket independent of the bushing andpivoted arm.

5. In a talking machine, the combination with a bracket having a tubularend provided with a groove for antifriction balls, a horn supported uponthe tubular end, a tubular arm carrying at one end a sound box, andhaving its other end turned upward beneath the tubular end of thebracket, a flanged bushing secured upon, the upwardly turned end of thetubular arm, and antifriction balls fitting into the groove ofthctubular end of the bracket and supporting the flange of the bushing.

(3'. In a talking machine, the combination with a bracket having atubular end provided with a groove semicircular in cross section forantiiriction balls, a horn supported upon the tubular end, a tubular armcarrying at one enda sound box, and having its other end turned upwardbeneath the tubular end of the bracket, a flanged bushing screwed uponthe upwardly turned end ot the tubular arm, and antifriction ballsfitting into the groove of the tubular end of the bracket and supportingthe flange of the bushing.

7. In a talking machine, the combination with a bracket havin a tubularend provided with a groove or antifriction balls, a horn supported uponthe tubular end, atubular arm carrying at one end a sound box and havingthe other end turned upward beneath the tubular end of the bracket andalso being jointed so that thesound box end ma be turned upward, means osupport the cut of the arm In its turned up position a flanged bushingsecured upon the upwardly of said support and the exterior of saidbushing, and a tubular sound box arm communicating With said bushing andwholly supported by said projecting portion.

21. The combination with a support havingan opening, of a hollow bushinghaving one end flanged and supported within said opening and its otherend projecting ontsitle of said opening. anti-friction balls betweensaid flanged end and the interior of said support, and a tubular soundbox arm carried by said projecting end.

22. In a talking machine, the combination with a support having anopening, of a hollow bushing rotatably mounted upon a fixed axis andentirely supported from within said opening and having a portionprojecting outside of said opening. and a tubular sound box armcommunicating with said bushing and wholly supported by said projectingportion.

- 23. In a talking machine, the combination with a support having anopening, of a hollow bushing rotatably supported entirely from withinsaid opening, a pair of arms supported by said bushing and extendingoutside of said opening. a tubular sound box arm comntunicating withsaid bushing. and a pivotal connection between said pair of arms andsaid sound box arm, said sound box arm being entirely supported throughsaid pivotal connection.

24. In a talking machine, the combination with a support having anopening, of a hollow rotatable bushing within said opening, and havingone end projecting outside of said support, rotatable antit'rictionmeans between the interior of said support and the exterior of saidbushing forming the sole support for said bushing, and a tubular soundbox arm carried by said projecting end.

25. In a talking machine, the combination with a support. having anopening, of a. hollow rotatable bushing within said opening, rotatableanti-friction means! between the interior of said support, and theexterior of said bushing, and a hollowsound box arm entirely supportedby said bushing, said sound box arm being formed of relatively movableinter-communicating portions.

26. In a. talking machine, the combination with a case, of a bracketsecured thereto and extending upwardly therefrom and terminating in atubular end, a rotatable bushingentirely supported from Within saidtubular end, and having an end projecting outside thereof, and a tubularsound box arm entirely supported by said projecting end.

27. In a talking machine, the combination of a tubular support having aninternal track Way for rotary anti-friction means, a rotatable bushingin said tubular support and having an external diameter smaller than theinternal diameter of the support, anti-friction means arranged betweenthe track Way and the bushing, sound amplifying means carried by saidtubular support, and a tubular sound box arm carried by said bushing.

28. The, combination with a bracket attached atone end to the casing ofa talking machine and having a tubular socket at its free end, of arotary sleeve carried by said socket and having its lower end projectingbeyond the lower edge of said socket, an adjustable piece carried bysaid projecting end of the rotary sleeve, horizontal pivots supported bysaid ring piece, a sound conveying arm supported by said pivots andhaving an upturned and curved end, a tubular piece having complementarycurved lower end interposed between the ring piece and the upturnedcurved end of the sound conveying arm, and a yielding cushion interposedbetween the said tubular piece and said ring piece.

In testimony of which invention, I hereunto sct my hand.

J as. R. NECK.

